It could be one of the most expensive breakups in Hollywood history, and RadarOnline.com has learned that mega-producer Brian Grazer has now filed court documents in attempts to reduce spousal support to his estranged wife, Gigi.

Grazer has been paying $75,000 monthly in temporary support, but Gigi isseeking nearly $998,000 per month for child support.

In documents filed today, Grazer states that Gigi’s spending hasincreased since he filed for divorce and he’s asking the court to referto their pre-nuptial agreement.

He states that his monthly income is $835,954 a month. In papers Gigi filed in October 2008, she claimed he earned $28 million dollars a year.

In the documents, Grazer states he had paid all of her household expenses and attorney fees in excess of $350,000.

Grazer says he is willing to buy her a home for no less than 5 millionand no more 8.75 million.

The couple have two children. Thomas & Patrick. They separated in 2006after nearly ten years of marriage. Gigi is his third wife.